I would get into the passenger seat bc it has more airbags.
Although technically the safest place remains the back, center seat so I guess that would be most logical.
But also, imagine the legal chaos if you jumped into the driver seat, and felt an accident was imminent, grabbed the wheel and did something, and an accident still occurred?
I'm 100% sure Lyft or whoever would point the finger at you.
More I think of it... best course of action is just to take a quick shot of whiskey for the nerves, take the back middle seat, and try and enjoy the ride letting it all be somebody else's problem.